1. Practice regularly. The best way to improve your singing voice is to practice regularly. This will help you to strengthen your vocal cords and develop the muscles you need to sing high notes.
2. Warm up your voice before you sing. Warming up your voice before you sing will help to prevent damage to your vocal cords. You can do this by singing scales or doing vocal exercises.
3. Use proper technique. When you sing, it is important to use proper technique to avoid damaging your vocal cords. This means singing from your diaphragm and using proper breath support.
4. Don't strain your voice. It is important to avoid straining your voice when you sing. This can damage your vocal cords and make it more difficult to sing high notes.
5. Take care of your vocal health. This means getting enough sleep, drinking plenty of water, and avoiding smoking and alcohol.
6. Work with a vocal coach. If you are having trouble getting your high singing voice back, you may want to work with a vocal coach. A vocal coach can help you to identify and correct any problems with your technique and can give you personalized exercises to help you improve your singing voice.